4choose the right answer.
1. you walk the dog. i'll do it myself.
(a) mustn't b) can't
c) needn't d) needn't to
2. i ask you a question? yes, of course!
a) may b) must
c) have
d) need
3. you enter this area! it's prohibited!
afneedn't b) don't have to c) don't need to d) mustn't
4. tam not sure if it is allowed to take these books. - yes, you
a) can b) must
c) need to
d) have to
5. frank_ wash the car because it is going to rain.
a) can't b) doesn't have to c) mustn't d) don't have to
